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Tuning of the electronic and optical properties of single-layer black phosphorus by strain

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Çakır, Deniz, Sahin, Hasan, Peeters, François M.·2014·Physical Review B

Abstract

Using first principles calculations we showed that the electronic and optical properties of single-layer black phosphorus (BP) depend strongly on the applied strain. Due to the strong anisotropic atomic structure of BP, its electronic conductivity and optical response are sensitive to the magnitude and the orientation of the applied strain. We found that the inclusion of many body effects is essential for the correct description of the electronic properties of monolayer BP; for example, while the electronic gap of strainless BP is found to be 0.90 eV by using semilocal functionals, it becomes 2.31 eV when many-body effects are taken into account within the ${G}_{0}{W}_{0}$ scheme. Applied tensile strain was shown to significantly enhance electron transport along zigzag direction of BP. Furthermore, biaxial strain is able to tune the optical band gap of monolayer BP from 0.38 eV (at $\ensuremath{-}8%$ strain) to 2.07 eV (at 5.5%). The exciton binding energy is also sensitive to the magnitude of the applied strain. It is found to be 0.40 eV for compressive biaxial strain of $\ensuremath{-}8%$, and it becomes 0.83 eV for tensile strain of 4%. Our calculations demonstrate that the optical response of BP can be significantly tuned using strain engineering which appears as a promising way to design novel photovoltaic devices that capture a broad range of solar spectrum.

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Metadata

Authors
Çakır, D., Sahin, H., & Peeters, F. M.
Venue
Physical Review B
Published
2014-11-17
Volume
90
Issue
20
ISSN
  • 1098-0121 (ISSN-L)
  • 1550-235X
OpenAlex
W2072461360
Cited by
342
References
65
FWCI
17.27
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Tuning of the electronic and optical properties of single-layer black phosphorus by strain. https://app.cochat.ai/papers/10.1103/physrevb.90.205421
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Çakır, D., Sahin, H., & Peeters, F. M. (2014). Tuning of the electronic and optical properties of single-layer black phosphorus by strain. Physical Review B. https://doi.org/10.1103/physrevb.90.205421

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